CVE-2026-47833 – BPM: Container-to-Host Privilege Escalation via Symlink Following

CVE ID :CVE-2026-47833

Published : June 18, 2026, 6:30 p.m. | 1 hour, 12 minutes ago

Description :setupBpmLogs follows symlink for bpm.log open and chown — container-to-host privilege escalation via /etc/shadow. A compromised process inside a bpm container can cause root to chown an arbitrary host file to vcap and append bpm JSON log lines to it. The chown alone lets the attacker take ownership of /etc/shadow and read every password hash on the host via the read-only /etc bind mount. This is a container-to-host confidentiality break affecting every bpm-managed job.

Affected versions: bpm-release, all versions prior to v1.4.30.

Severity: 6.8 | MEDIUM

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